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boards: nrf52833dk|nrf21540dk: fix UART1 pinctrl instructions

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nRF52840DK documentation was updated with details on how to change UART1
pins. nRF52833DK and nRF21540 boards has the same incorrect instructions
and were not fixed. Do it now.

Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
This commit is contained in:
Gerard Marull-Paretas 2022-11-21 15:32:40 +01:00 • committed by Carles Cufí
commit 9ebb9abab7
2 changed files with 22 additions and 26 deletions
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24
boards/arm/nrf21540dk_nrf52840/doc/index.rst
View file

@ -175,25 +175,25 @@ You can build and flash the examples to make sure Zephyr is running correctly on
your board. The button and LED definitions can be found in
:zephyr_file:`boards/arm/nrf21540dk_nrf52840/nrf21540dk_nrf52840.dts`.
Using UART1
***********
Changing UART1 pins
*******************
The following approach can be used when an application needs to use
more than one UART for connecting peripheral devices:
The following approach can be used when an application needs to use another set
of pins for UART1:
1. Add devicetree overlay file to the main directory of your application:
.. code-block:: devicetree
&pinctrl {
uart1_default: uart1_default {
uart1_default_alt: uart1_default_alt {
group1 {
psels = <NRF_PSEL(UART_TX, 0, 14)>,
<NRF_PSEL(UART_RX, 0, 16)>;
};
};
/* required if CONFIG_PM_DEVICE=y */
uart1_sleep: uart1_sleep {
uart1_sleep_alt: uart1_sleep_alt {
group1 {
psels = <NRF_PSEL(UART_TX, 0, 14)>,
<NRF_PSEL(UART_RX, 0, 16)>;
@ -203,18 +203,16 @@ more than one UART for connecting peripheral devices:
};
&uart1 {
compatible = "nordic,nrf-uarte";
current-speed = <115200>;
status = "okay";
pinctrl-0 = <&uart1_default>;
pinctrl-1 = <&uart1_sleep>;
pinctrl-0 = <&uart1_default_alt>;
/* if sleep state is not used, use /delete-property/ pinctrl-1; and
* skip the "sleep" entry.
*/
pinctrl-1 = <&uart1_sleep_alt>;
pinctrl-names = "default", "sleep";
};
In the overlay file above, pin P0.16 is used for RX and P0.14 is used for TX
2. Use the UART1 as ``DEVICE_DT_GET(DT_NODELABEL(uart1))``
See :ref:`set-devicetree-overlays` for further details.
Selecting the pins

24
boards/arm/nrf52833dk_nrf52833/doc/index.rst
View file

@ -157,25 +157,25 @@ You can build and flash the examples to make sure Zephyr is running correctly on
your board. The button and LED definitions can be found in
:zephyr_file:`boards/arm/nrf52833dk_nrf52833/nrf52833dk_nrf52833.dts`.
Using UART1
***********
Changing UART1 pins
*******************
The following approach can be used when an application needs to use
more than one UART for connecting peripheral devices:
The following approach can be used when an application needs to use another set
of pins for UART1:
1. Add devicetree overlay file to the main directory of your application:
.. code-block:: devicetree
&pinctrl {
uart1_default: uart1_default {
uart1_default_alt: uart1_default_alt {
group1 {
psels = <NRF_PSEL(UART_TX, 0, 14)>,
<NRF_PSEL(UART_RX, 0, 16)>;
};
};
/* required if CONFIG_PM_DEVICE=y */
uart1_sleep: uart1_sleep {
uart1_sleep_alt: uart1_sleep_alt {
group1 {
psels = <NRF_PSEL(UART_TX, 0, 14)>,
<NRF_PSEL(UART_RX, 0, 16)>;
@ -185,18 +185,16 @@ more than one UART for connecting peripheral devices:
};
&uart1 {
compatible = "nordic,nrf-uarte";
current-speed = <115200>;
status = "okay";
pinctrl-0 = <&uart1_default>;
pinctrl-1 = <&uart1_sleep>;
pinctrl-0 = <&uart1_default_alt>;
/* if sleep state is not used, use /delete-property/ pinctrl-1; and
* skip the "sleep" entry.
*/
pinctrl-1 = <&uart1_sleep_alt>;
pinctrl-names = "default", "sleep";
};
In the overlay file above, pin P0.16 is used for RX and P0.14 is used for TX
2. Use the UART1 as ``DEVICE_DT_GET(DT_NODELABEL(uart1))``
See :ref:`set-devicetree-overlays` for further details.
Selecting the pins